Plunger-cleaning device



Feb. 16,1926. 1,513,720

A E. c. LAMBSON PLUNGER CLEANING DEVZICE Filed Feb. 4. 1924 N' sl,

WITNEssEs INVENTOR Edzmrd Lamwolz v ATTORNEYS Patented eb. 1K6, 1926.k

EDWARD CHESTER'LAM?SON,OF JEFFERSON, OHIO.

PLUNGER-CLEANING DEVICE.V

Application filed-February 4., 1924:.` Serial Noi 690,593.

T0 all whom t may concern.' Be it known that I, EDWARD C. LAMrsoN,

a citizen of the United States, and a resi-y dent of Jeffersomin thecountyof Ashta-y bula and State of Ohiofhave invented "a new and Improved. Plunger-Cleaning De- 'vice, of .which-the followingis a full, clear,

and ,exact description.

This invention relates to a device f or cleaning plungers. An object of the invention has to do with the provision of a sin -V ple and efficient device whereby plungers, which of necessity have to work in fluids. may be` which gradually coat their surfaces, simply and easily cleaned.

' Another object concerns the provision of means whereby such plungers may be rapl idly and simply cleaned in a manner to prevent :the substance scraped 4therefrom get-r proofcasing and thoroughly and efficiently scraped or cleaned of its coating materialY with a minimum effort on lthe part of the operator.V Y

rlhe invention is illustrated in the drawings, of which-` i Figure 1 is a vertical longitudinal section through the device; f `Fig. 2 isa transversev vertical section on the line 2 2 of 1; and

`Fig. 3 is a section similar to Fig. 1 showing a different means for producing` relative rotation between the plunger and the brush frame.

.The form of the invention shown in the drawings-is a preferred form, although it is understood that modifications in thefconstruction and arrangement of the parts and in the character of the materials-used may be adopted without fdeparting from the vention concerns a device for removing oxide, metal, metal dust, dirt, rust or other substances which accumulate onuplungers used in casting molten metal,v especially those used in` such machines as the'linotype. The

invention is further concerned with the provision for cleaning such plungers m such the' escape of said substances into the worky lroom to the detriment of the health ofthe .occupants thereof. It is inconvenient to do such cleaning in the open airV because the plunger grows 'eoldfrapidly and has to be warmed thoroughly before being placed into position in its respective casting position if it is allowed to cool toogmuch, thus causing loss of time and operation.v

To this end,'I have provided a box or casing 1 which is provided with a cover 2 readily removable therefrom. This boX is yprovided with a removable end plate 3 having an aperture i therein. -Thr'ough this aperture e the stem 5 of aplunger;orpiston' 6 is adapted to extend. The removableend plate 3 is held inl position inthe end of the box or casing by means of adjustableclips 7 but, of course, can beheld in position by any lother suitable means. A' y `The;plunger6 isadapted to extend into the casingV and to be Ldisposed between a plurality of brushes such as8 Amountedon brush plates 9 which .inturn are fastened to a brush-supporting frame frame is provided with a shaft 11 extending through the end plate 12 of the casing,I and inthe form shown in Fig. -3 this shaft is providedwith la handle 13. whereby theV brush-supporting fram-ef can be rotated.l InV theform shown in Fig.l 1, the brush-sup-z portingframe is rigidly r'fastened tothe end i plate 12 ofthe casing and is not rotatable.

In this latter case the relative rotation between the plunger 6 and the brushes is provided vby Yrotating theplunger by means vof a handle 14 radially fastened on the end Vof the plunger shaft 5 outside the casing. Preferably the aperture 4 is square since the stem 5 is preferably square, and in rotatingthe stem by means of the handle la the end plate 3 also rotates. Intermediate the end. plate 3 and the brush-supporting frame 10, and disposed on the bottom of the'boX 1, is a cylinder 15 inwhich a stem 16 reciproeates, the upper end `of said stem formed as a saddle 17 on'which an intermediate portion of the stem 5 rests. Aga-inst the end surface of this saddle a spring 18 bears, the other end of thelspring'being disv1,0. This posed againstthe bottom of the cylinder or n the bottom of the bo: :,`as the case may be, this vspring tending to hold the saddle upwardly and thereby keep the plunger 6 in close contact with the brushes.

'manner in a dustproof casing as to prevent; Portions of the brushes and their plates are curved in shape so as to more ell'eetivell'/ Contact with the surface ot the plunger. Each brush plate is provided With op positely extending` ears 19 and 20, and between Corresponding' ears on the brush plates springs snoh as 2l extend to normally pull the brush plates together. To permit of this slight movement of the brush pates.q they are eonneeted -to the brush-supportini;` tra-mes through rivets sneh as which slide i'n small slots such as 23 in the brushsupporting tra-me l0. Bj; means ot this adjustment a slight relative movement toward and away from eaeh other is permitted the brash-supporting plates.

n the operation ot the device the plunger is inserted in the easing' and the end plate slipped over the end ot' the shatt and fastened into place with the inter nediato portion ot the shaft re tine` on the saddle. In the Yterm shown in Figi'. l the handle l-'l is turned to rotate the plunger.` the saddle and its spring' aetion keeping the plunger in intimate Contact with the brushes.

In the operation shown in E3., the plunger is inserted as betere but in this ease instead ot rotating' the plunger, the briislr-sup-portingl pla-te or 'trame is rotated by means ot' the handle i3. As a matter ot tact. of course, it is possible to rotate both the shatt and the brush supporting trame, but this would merely double the relative speed of the brushes and the plnngers and not give any more etiieient ae-- tion.

What l Claim is l. A plunger cleaning' device, which includes a dnstproot easing:l having an apertured removable end portion through which the shaft ot a plunger is adapted to extend7 a rotatable brush-supporting' iraine mounted on the opposite end ot the casing); and

adapted to engage with the head oit the plunger, means tor rotating said brush-supporting frame exterior of the casing, and

a saddle resilientlyv supported wit-hin the easing` and adapted to support the sha't ot the plunger intern'iediate the head and the removable end portion.

2. plunger cleaning' neviee. which includes a dn tproot easing, a pair ot brush plates supported therein7 a brush-supporting traine on which said plates are mounted. said trame being' slotted, means on said plates ei'tending through said slots to permit a l'inited and tree movement ot the plates with respect to the tra-ine, and spring; means extending' hetWen the plates tend-1 ingr to pnll them toward eaoh other.

it. plunger cleaning' device? which insupported therein, a brash-supportand :tree movement ot the with respect to the frame, spring:Y

means extending between the plates tendingr to pull them tonfard eaeh other? and me` s exterior ot' the eas: and Connected trame to rotate the saine.

it plunger cleaningl device, which includes a dustproot casing', a pair ot brush plates supported thereiin brush-supporting' .i me on 1which said plates are mounted. said frame beingy slotted, means' on said plat-es extending through said slots to permit liinited and tree movement ot the plates with respeet to the trame, spring/D- i leans extending between the plates tend-4 ing;` pnll them toward each other7 means exterior of the easing` and connected to the trame to rotate the sa'ie. and a resi ientlv n'ionnted saddle .vitliin the adapted to support the shaft ot the plunger vto be cleaned intermediate the iframe and the end ot the easing` through ivhieh said shaft e tends.

dustproot easing, a pair ot brush' 

